# sr20 idles rough!?!?!??!
**URL:** https://forums.speedlife.net/t/sr20-idles-rough/107875
**Category:** SON240sx Automotive
**Created:** [July 22, 2007, 8:58pm UTC](https://forums.speedlife.net/t/sr20-idles-rough/107875 "2007-07-22T20:58:46Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@ls6s13](https://forums.speedlife.net/u/ls6s13)
#### Post date: [July 22, 2007, 8:58pm UTC](https://forums.speedlife.net/t/sr20-idles-rough/107875/1 "2007-07-22T20:58:46Z")
what would eb the cause of my sr20 to idle rough when it has been driven for alil also sumtimes the rpms wile dive down when i put the clutch in to almost 200rpm and nearly stall. o2 sensor? i have already changed the plugs and also is there a idle screw on the sr20s?
redtop sr20det
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### Author:  [@nwmrkt](https://forums.speedlife.net/u/nwmrkt)
#### Post date: [July 22, 2007, 9:04pm UTC](https://forums.speedlife.net/t/sr20-idles-rough/107875/2 "2007-07-22T21:04:58Z")
have you checked your other thread on this problem? Have you tried the suggestions? What bov are you running? And are you using anything to tune? Like a apexi safc?
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### Author:  [@ls6s13](https://forums.speedlife.net/u/ls6s13)
#### Post date: [July 23, 2007, 8:20am UTC](https://forums.speedlife.net/t/sr20-idles-rough/107875/3 "2007-07-23T08:20:27Z")
no tuning as of now…BOV is turbosmart without any horns so i imagine its one of there smaller ones. i had no idea atmospheric bovs could cause rough idle and rpm fluctiation. also if i were to get my car tuned wuts a good safc for a good price and where do i get it tuned. thanks
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### Author:  [@nwmrkt](https://forums.speedlife.net/u/nwmrkt)
#### Post date: [July 23, 2007, 11:14am UTC](https://forums.speedlife.net/t/sr20-idles-rough/107875/4 "2007-07-23T11:14:42Z")
I atmospheric blow off vavle “could” cause the rough idle but I hear of people running hks ss and not having a problem. You could recirculate the bov. Or search in the for sale forum for any SAFC. You can tune it yourself or bring it to someone, there should be someone near you. Look around.